of rockland



D". M. TRUE.

LAST.

Patented Feb. 8, 1859.

UNITED STATES PATENT OFFICE.

D. M. TRUE, OF ROOKLAND, MAINE.

LAST.

Specification of Letters Patent No. 22,904, dated February 8, 1859;

To all whom it may concern:

Be it known that I, D. M. TRUE, of Rockland, county of Lincoln, State ofMaine, have invented a new and Improved Mode of Fastening Last-Blocksonto Lasts; and I do hereby declare that the following is a full andexact description thereof, reference being had to the accompanyingdrawings and to the letters of reference marked thereon.

The nature of my invention consists in arranging within the last-block abolt which passes into the last diagonally with the face of the block,thereby preventing the block' from rising or slipping from its place;which I denominate a last-block fastener.

To enable others skilled in the art to make and use my invention I willproceed to describe its construction and operation, reference being hadto the annexed drawings, making a part of this specification; in which VFigure 1 is a side view of the last with the block raised; Fig. 2 is aside and bottom view of the block; Fig. 3 is a top view of the lastwithout the block; Fig. 4: is a view of the detached parts of thefastening and last hook.

In constructing the fastening I make and use the parts a, b, and c, asshown, Fig. 4; the bolt a, consists of iron, or other suitable material,with a notch f, near the upper end, and a shoulder g, on the lower end.

7), represents a spiral spring, and c, a wire I bore a hole in the blockas in A, Fig. 1, commencing in the lower face of the block pasing up bythe lasthook-hole e, and cuttlng about of its diameter through it, andcoming to an end before it passes out through the top of the block. Ithen place in the end of this hole the spiral spring I), Fig. 1. I thenplace in the same hole the bolt a, as in Fig. 1, with the end thatcontains the notch f, against the spring 6, the notch f, facing thelasthook-hole e. I then ing the bolt a, from coming out or turningaround. I also cut a notch mortised, in the last B, Figs. 1 and 3, toreceive the bolt a, which prevents the block from rising or slippingfrom its place.

To operate this fastening, I make a lasthook in thecommon form, andscarp the end of the hook, which gives it a wedge shape, as shown by C,Fig. 4:. To fasten the block A, Fig. 2, to the last B Figs. 1 and 3, Iplace the block on the last with the end of the bolt a, a little back ofthe notch mortise cl. I then press them together and slip the block toits place; when the spring 5, shoves the bolt a, to its place in themortise d, at the same bringing the notch f in the bolt a, near thebottom of the lasthookhole 6, when by the action of the bolt a and themortise (Z the last and block become firmly fastened together. To removethe block from the last, I pass the point of the lasthook C, Fig. a,into the lasthook-hole c Fig. 1, when the end of the lasthook slidesagainst the top of the notch f, in the bolt 0, as shown in Fig. 4, andraises the bolt a from the mortise d Figs. 1 and 3; I then draw theblock from the last in the usual manner.

I do not claim the use of the bolt and spring to be used for a fasteningas new but I claim As a fastening for last blocks, the bolt (0 whenformed with the notches f and g, and combined and arranged with thespring I), the pin 0, and lasthook hole 6.

D. M. TRUE.

l/Vitnesses:

Pinto Trrons'ron, Z. Porn Vosn.

